microbit vision webapp third step: mediapipe
https://github.com/ferryzhou/nezha-ble/tree/main/hands
copied from https://github.com/pjbelo/mediapipe-js-demos
tested and works
https://ferryzhou.github.io/nezha-ble/hands/index.htm
the next step is to combine the two.
cellphone is head (with high resolution vision censor), microbit with nezha car is body, webapp is the program / mind.